Think of these issues:
-) a favourable company structure as I already hinted at
-) the neccessary capacity to do the investment
-) the custom implications related to importing things from overseas in the 50s.
-) the attitude towards the japanese photo industry
(from what we know, widely talked down up into the 60s at least by the german photographic industry)
-) the existance of knowledge at all about the japanese industry
(for the german industry I have much doubt for people other than export directors)
Does anyone know of any US company that bought in the 50s a foreign firm doing high added value manufacturing to import those products into the USA ?
My phone is horrible but from memory
Attitudes - the Zeiss U.S. marketing manager claimed that the contax 5cm /1.5 was better than the Nikon /1.4 circa 52-53 so one of the US photo mags did an independent test, yes the Zeiss lens was detectably better with tripod and slow film but the Nikon was cheaper. In the UK we call this an own goal.
The U.S. had 'sold' ie given Demming's techniques and Ja industry adopted - it allowed cheaper manufacture. They were aware of the canon and Nikon factories questions and comments...
Leitz did not adopt much of Demming until the M4-2, designed partly in Midland factory in Canada.
Canon made Barnack clones but did not manage any long production runs until the VI in 57 and the P in 59. The P sold 100k over 2.5 years and only professional photographers could import to Uk until about 61. Lots of canons have bought in PX stores engravings.
Normally marketing people in country would have gathered intelligence on other peoples cameras eg looking at serial numbers and yen in camera shops. Buying people lunch... And other illegal techniques.
The U.S. had already bought lots of Uk industry before WWII lots of our industry was unable to export anything the backlog on small autos was more than two years by '50, though Ge bubble autos were more available, and motorised bicycles. Sugar was rationed until '52.
Eg Vauxhall motors had been bought some time in 20-30.
In 50s there would have not been a lot to buy in UK. Even Spain was suffering from a long war.